Resource scheduling method and device of energy storage system, equipment and medium

Abstract

The embodiment of the invention provides a resource scheduling method and device of an energy storage system, equipment and a medium. The method comprises the following steps: obtaining the residual capacity of an energy storage system and the load demand of a current power grid; according to the residual capacity and the load demand, a power supply mode is determined, and the power supply mode comprises energy storage system power supply or cooperative power supply of the energy storage system and an external power supply; and executing a charging and discharging task according to the power supply mode. The method is used for achieving the effect of accurately scheduling the energy storage resources.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage system monitoring, and in particular to a resource scheduling method, device, equipment and medium for an energy storage system. Background Art

[0002] As an important component of modern power systems, energy storage systems are widely used in scenarios such as grid load regulation, renewable energy grid connection, and emergency backup power supply. In grid operation, due to the dynamic changes in load and the limitations of energy storage equipment capacity, how to efficiently dispatch energy storage systems to meet the load requirements of the grid has become an important research topic.

[0003] At present, the traditional energy storage system scheduling method mainly relies on simple addition and subtraction calculation rules. However, this method is difficult to cope with complex operation scenarios with multiple tasks and multiple constraints, especially when the grid load demand fluctuates violently, and there are problems such as poor flexibility and lack of accuracy in the scheduling rules.

[0004] In summary, the current energy storage system scheduling scheme leads to over-utilization or waste of energy storage resources in the energy storage system, and it is difficult to adapt to complex dynamic changes in power load scenarios. Summary of the invention

[0005] The embodiments of the present application provide a resource scheduling method, device, equipment and medium for an energy storage system, so as to achieve the effect of accurately scheduling energy storage resources.

[0006] In a first aspect, an embodiment of the present application provides a resource scheduling method for an energy storage system, comprising: obtaining a remaining capacity of the energy storage system and a load demand of a current power grid;

[0007] Determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by an energy storage system, or power supply by an energy storage system in conjunction with an external power source;

[0008] The charging and discharging tasks are performed according to the power supply mode.

[0009] In a possible implementation manner, determining a power supply mode according to the remaining capacity and the load demand includes:

[0010] If the load demand is less than or equal to the remaining capacity, determining that the power supply mode is power supply by the energy storage system;

[0011] If the load demand is greater than the remaining capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0012] In a possible implementation manner, determining a power supply mode according to the remaining capacity and the load demand includes:

[0013] Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system;

[0014] If the load demand is greater than the power capacity, determining that the power supply mode is power supply by the energy storage system;

[0015] If the load demand is less than or equal to the power capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0016] In a possible implementation manner, determining a power supply mode according to the remaining capacity and the load demand includes:

[0017] Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system;

[0018] Calculating the difference between the load demand and the power capacity to obtain a grid gap demand;

[0019] Calculate the dispatch priority according to the grid gap demand and the preset dispatch priority calculation formula of the energy storage system;

[0020] Determining the power supply mode according to the scheduling priority;

[0021] The scheduling priority calculation formula is:

[0022]

[0023] in, Indicates the scheduling priority, represents the grid gap demand at time t, Indicates the priority adjustment coefficient of load demand, represents the suppression factor of the discharge task on the scheduling priority, represents the second weight factor of the discharge task at time t, Represents the relative priority factor of the charging task and the discharging task at time t, , Indicates the starting point of the time interval. Indicates the end point of a time interval.

[0024] In a possible implementation manner, determining the power supply mode according to the scheduling priority includes:

[0025] If the scheduling priority is greater than 0 and less than a preset threshold, determining that the power supply mode is power supply by the energy storage system;

[0026] If the scheduling priority is greater than the preset threshold, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0027] In a possible implementation manner, performing the charging and discharging task according to the power supply mode includes:

[0028] Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool;

[0029] If the number of the charging tasks is less than or equal to the number of the discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode;

[0030] If the number of the charging tasks is greater than the number of the discharging tasks, the charging tasks in the charging task pool are executed first according to the power supply mode.

[0031] In a possible implementation manner, performing the charging and discharging task according to the power supply mode includes:

[0032] Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool;

[0033] Calculating a first weight factor of the charging task according to the number of charging tasks and a preset exponential function;

[0034] Calculating a second weight factor of the discharge task according to the number of discharge tasks and a preset square root function;

[0035] Based on the first weight factor and the second weight factor, a relative priority factor of the charging task and the discharging task is calculated;

[0036] If the relative priority factor is greater than 1, the charging task in the charging task pool is executed first, otherwise the discharging task in the discharging task pool is executed first.

[0037] In a possible implementation manner, the calculating, based on the first weight factor and the second weight factor, the relative priority factor of the charging task and the discharging task includes:

[0038] Based on the first weight factor and the second weight factor, using

[0039]

[0040] Calculate the relative priority factors of the charging task and the discharging task;

[0041] in, Represents the first weight factor of the charging task at time t.

[0042] In a possible implementation manner, the preset exponential function is:

[0043]

[0044] in, represents the number of charging tasks in the charging task pool at time t, represents the attenuation coefficient;

[0045] The preset square root function is:

[0046]

[0047] in, Indicates the number of discharge tasks in the discharge task pool.

[0048] In a possible implementation, the method further includes:

[0049] When performing charging tasks, use

[0050]

[0051] Determine the charging power that can be allocated by the energy storage system;

[0052] in, represents the allocable charging power of the energy storage system at time t, Indicates the maximum discharge power of the energy storage system, represents the remaining capacity of the energy storage system at time t, Represents the load demand of the energy storage system at time t.

[0053] In a possible implementation, the method further includes:

[0054] When performing the discharge task, the

[0055]

[0056] Determine the distributable discharge power of the energy storage system;

[0057] in, It represents the distributable discharge power of the energy storage system at time t.

[0058] In a second aspect, an embodiment of the present application provides a resource scheduling device for an energy storage system, comprising:

[0059] An acquisition unit, used to obtain the remaining capacity of the energy storage system and the current load demand of the power grid;

[0060] a determining unit, configured to determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by an energy storage system, or power supply by an energy storage system in cooperation with an external power supply;

[0061] An execution unit is used to execute charging and discharging tasks according to the power supply mode.

[0062] In a possible implementation manner, the determining unit is specifically configured to:

[0063] If the load demand is less than or equal to the remaining capacity, determining that the power supply mode is power supply by the energy storage system;

[0064] If the load demand is greater than the remaining capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0065] In a possible implementation manner, the determining unit is specifically configured to:

[0066] Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system;

[0067] If the load demand is greater than the power capacity, determining that the power supply mode is power supply by the energy storage system;

[0068] If the load demand is less than or equal to the power capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0069] In a possible implementation, the determining unit includes:

[0070] A conversion module, based on a power capacity calculation formula, converts the remaining capacity into a power capacity of the energy storage system;

[0071] A first calculation module is used to calculate the difference between the load demand and the power capacity to obtain a grid gap demand;

[0072] A second calculation module is used to calculate the dispatch priority according to the grid gap demand and a preset dispatch priority calculation formula of the energy storage system;

[0073] A determination module, used to determine the power supply mode according to the scheduling priority;

[0074] The scheduling priority calculation formula is:

[0075]

[0076] in, Indicates the scheduling priority, represents the grid gap demand at time t, Indicates the priority adjustment coefficient of load demand, represents the suppression factor of the discharge task on the scheduling priority, represents the second weight factor of the discharge task at time t, Represents the relative priority factor of the charging task and the discharging task at time t, , Indicates the starting point of the time interval. Indicates the end point of a time interval.

[0077] In a possible implementation manner, the determining module is specifically configured to:

[0078] If the scheduling priority is greater than 0 and less than a preset threshold, determining that the power supply mode is power supply by the energy storage system;

[0079] If the scheduling priority is greater than the preset threshold, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0080] In a possible implementation manner, the execution unit is specifically configured to:

[0081] Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool;

[0082] If the number of the charging tasks is less than or equal to the number of the discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode;

[0083] If the number of the charging tasks is greater than the number of the discharging tasks, the charging tasks in the charging task pool are executed first according to the power supply mode.

[0084] In a possible implementation, the execution unit includes:

[0085] An acquisition module, used to acquire the number of charging tasks in the charging task pool and the number of discharging tasks in the discharging task pool;

[0086] A third calculation module, configured to calculate a first weight factor of the charging task according to the number of charging tasks and a preset exponential function;

[0087] A fourth calculation module, used for calculating a second weight factor of the discharge task according to the number of the discharge tasks and a preset square root function;

[0088] a fifth calculation module, configured to calculate a relative priority factor of a charging task and a discharging task based on the first weight factor and the second weight factor;

[0089] The execution module is used to execute the charging task in the charging task pool first if the relative priority factor is greater than 1, and otherwise execute the discharging task in the discharging task pool first.

[0090] In a possible implementation manner, the fifth calculation module is specifically configured to:

[0091] Based on the first weight factor and the second weight factor, using

[0092]

[0093] Calculate the relative priority factors of the charging task and the discharging task;

[0094] in, Represents the first weight factor of the charging task at time t.

[0095] In a possible implementation manner, the preset exponential function in the third calculation module is:

[0096]

[0097] in, represents the number of charging tasks in the charging task pool at time t, represents the attenuation coefficient;

[0098] The preset square root function in the fourth calculation module is:

[0099]

[0100] in, Indicates the number of discharge tasks in the discharge task pool.

[0101] In a possible implementation manner, the resource scheduling device of the energy storage system further includes:

[0102] The first allocation unit is used to use

[0103]

[0104] Determine the charging power that can be allocated by the energy storage system;

[0105] in, represents the allocable charging power of the energy storage system at time t, Indicates the maximum discharge power of the energy storage system, represents the remaining capacity of the energy storage system at time t, Represents the load demand of the energy storage system at time t.

[0106] In a possible implementation manner, the resource scheduling device of the energy storage system further includes:

[0107] The second allocation unit is used to use

[0108]

[0109] Determine the distributable discharge power of the energy storage system;

[0110] in, It represents the distributable discharge power of the energy storage system at time t.

[0111] In a third aspect, an embodiment of the present application provides a computer device, including: a memory, a processor;

[0112] The memory stores computer-executable instructions;

[0113] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0114] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0115] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0116] The resource scheduling method, device, equipment and medium of the energy storage system provided in the embodiments of the present application first obtain the remaining capacity of the energy storage system and the current load demand of the power grid, and then determine the power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by the energy storage system, or coordinated power supply by the energy storage system and an external power supply, and means for performing charging and discharging tasks according to the power supply mode. By considering the actual operating conditions of the energy storage system and the power grid load, the power supply mode of the energy storage system is dynamically and flexibly determined, thereby achieving the effect of accurately scheduling energy storage resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0118] Figure 1 A schematic diagram of a flow chart of a resource scheduling method for an energy storage system provided in Embodiment 1 of the present application;

[0119] Figure 2 A schematic diagram of a flow chart of a resource scheduling method for an energy storage system provided in Embodiment 2 of the present application;

[0120] Figure 3 A schematic diagram of a flow chart of a resource scheduling method for an energy storage system provided in Embodiment 3 of the present application;

[0121] Figure 4A schematic diagram of the structure of a resource scheduling device for an energy storage system provided in Embodiment 4 of the present application;

[0122] Figure 5 A schematic diagram of the structure of a resource scheduling device for an energy storage system provided in Embodiment 5 of the present application;

[0123] Figure 6 A schematic diagram of the structure of the computer device provided for this application.

[0124] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0125] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0126] First, the terms involved in this application are explained:

[0127] The load demand of the power grid refers to the total electric power consumed by all electrical equipment connected to the power grid (such as industrial equipment, commercial equipment, residential equipment, etc.).

[0128] In response to the technical problems in the above-mentioned background technology, the inventors found that when studying the resource scheduling method of the energy storage system, it was difficult to implement the scheduling method in the prior art in the complex scenario of dynamic changes in power load. Therefore, it was considered to determine the power supply method for the grid load according to the remaining capacity of the energy storage system and the load demand of the grid, and perform the charging and discharging tasks of the energy storage system based on the charging method, so as to dynamically and flexibly schedule the energy storage resources accurately.

[0129] Based on the conception of the above inventors, the resource scheduling method, device, equipment and medium of the energy storage system provided in the embodiments of the present application first obtain the remaining capacity of the energy storage system and the load demand of the current power grid, and then determine the power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by the energy storage system, or coordinated power supply by the energy storage system and an external power supply, and the means of performing charging and discharging tasks according to the power supply mode, so as to achieve the effect of accurate scheduling of energy storage resources, and solve the problem that the energy storage resources of the energy storage system in the prior art are over-utilized or wasted, and it is difficult to adapt to complex dynamic changes in power load scenarios.

[0130] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0131] Figure 1 A schematic diagram of a flow chart of a resource scheduling method for an energy storage system provided in Example 1 of the present application, such as Figure 1 As shown, the method includes:

[0132] S101. Obtain the remaining capacity of the energy storage system and the current load demand of the power grid.

[0133] In this step, it is necessary to obtain the remaining capacity of the current energy storage system and the load demand of the current power grid. The remaining capacity of the energy storage system is usually represented by the state of charge (SOC) of the energy storage system.

[0134] In a specific implementation, the remaining capacity of the energy storage system can be obtained through an embedded monitoring system equipped with the energy storage system, or intelligent sensors installed at key locations of the energy storage system; the load demand of the current power grid can be obtained by monitoring the power grid monitoring system equipped with the power grid.

[0135] S102. Determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by the energy storage system, or power supply by the energy storage system in conjunction with an external power source.

[0136] In this step, it is necessary to determine whether the power supply mode for the grid load is the energy storage system or the energy storage system and an external power source in coordination with each other, based on the remaining capacity of the energy storage system and the load demand.

[0137] Among them, the external power supply refers to other power supply equipment other than the energy storage system that can supply power to the load of the power grid, such as thermal power generation, hydropower generation, solar power generation, etc.

[0138] In a specific implementation, the power supply mode may be determined in the following manner:

[0139] If the load demand is less than or equal to the remaining capacity, the power supply mode is determined to be the energy storage system; if the load demand is greater than the remaining capacity, the power supply mode is determined to be the energy storage system and the external power supply.

[0140] In this implementation, the power supply mode is determined by directly comparing the load demand with the remaining capacity. When the load demand is relatively small or equal to the remaining capacity, only the energy storage system is used to discharge to meet the load demand; when the load demand is relatively large, an external power source is introduced to discharge in coordination with the energy storage system to meet the load demand, effectively preventing the energy storage system's energy storage resources from being overused or wasted.

[0141] Optionally, in a specific implementation, the power supply mode may be determined in the following manner:

[0142] Step 1: Based on the power capacity calculation formula, convert the remaining capacity into the power capacity of the energy storage system;

[0143] In this step, the power capability is calculated as: , where SOC represents the remaining capacity, Represents the power capability of the energy storage system, represents the discharge efficiency of the energy storage system, Indicates the maximum discharge power of the energy storage system.

[0144] Step 2: If the load demand is greater than the power capacity, the power supply mode is determined to be the energy storage system; if the load demand is less than or equal to the power capacity, the power supply mode is determined to be the energy storage system and the external power supply in coordination.

[0145] In this implementation, the remaining capacity is converted into power capacity, and then the load demand is compared with the power capacity to determine the power supply mode. When the load demand is relatively small or equal to the remaining capacity, only the energy storage system is used to discharge to meet the load demand; when the load demand is relatively large, an external power source is introduced to discharge in coordination with the energy storage system to meet the load demand, effectively preventing the energy storage system's energy storage resources from being overused or wasted.

[0146] S103, executing charging and discharging tasks according to the power supply mode.

[0147] In this step, it should be understood that in order to maintain the supply and demand balance of the power system, the energy storage system needs to perform charging and discharging tasks. Based on this, when the energy storage system performs the discharging task, it can supply power to the load of the power grid according to the determined power supply method. Among them, the charging task refers to charging the energy storage system; the discharging task refers to discharging the energy storage system.

[0148] Optionally, in a specific application of the present solution, the scheduling plan (i.e., the power supply method) can be determined in steps S101-S102 at a preset scheduling plan formulation time node, and step S103 can be executed between this time node and the next preset scheduling plan formulation time node (i.e., during this period, the charging and discharging tasks are performed according to the formulated scheduling plan).

[0149] The resource scheduling method for the energy storage system provided in this embodiment first obtains the remaining capacity of the energy storage system and the current load demand of the power grid, and then determines the power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by the energy storage system, or power supply by the energy storage system and an external power supply in coordination, and means for performing charging and discharging tasks according to the power supply mode. By considering the actual operation of the energy storage system and the power grid load, the power supply mode of the energy storage system is dynamically and flexibly determined, which can meet the dynamically changing load demand during the operation of the power grid, achieve the effect of accurately scheduling energy storage resources, and effectively avoid waste and excessive use of energy storage resources.

[0150] Furthermore, Figure 2 A schematic diagram of a flow chart of a resource scheduling method for an energy storage system provided in Embodiment 2 of the present application, such as Figure 2 As shown, based on the first embodiment, in the resource scheduling method of the energy storage system provided in this embodiment, the charging and discharging tasks are executed according to the power supply mode, specifically including:

[0151] S201. Obtain the number of charging tasks in a charging task pool, and obtain the number of discharging tasks in a discharging task pool.

[0152] In this solution, when the energy storage system is running, data on the remaining capacity of the energy storage system and the load demand of the power grid will be collected at preset time intervals. Each time data is collected, the task type of the task to be executed by the energy storage system will be determined based on the remaining capacity and load demand of the power grid collected at that time node, and the task will be divided into the corresponding task pool according to the task type. Among them, the preset time interval can be determined according to actual conditions, and this application does not limit this, for example, 10 minutes.

[0153] For example, if the remaining capacity of the energy storage system is judged to be lower than a preset threshold at a certain time node, the task to be performed by the energy storage system is determined to be a charging task, and the charging task at this time node is added to the charging task pool; if the remaining capacity of the energy storage system is judged to be higher than a preset threshold at a certain time node and the load demand of the power grid is large, the task to be performed by the energy storage system is determined to be a discharging task, and the discharging task at this time node is added to the discharging task pool. The preset threshold can be determined according to actual conditions, for example, the preset threshold can be 30%.

[0154] Based on this, in this step, in order to ensure the efficient operation of the power system, it is necessary to obtain the number of charging tasks in the current charging task pool and the number of discharging tasks in the discharging task pool in real time when the energy storage system performs charging and discharging tasks according to the power supply mode, so as to determine the tasks that the energy storage system should perform first.

[0155] S202: If the number of charging tasks is less than or equal to the number of discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode; if the number of charging tasks is greater than the number of discharging tasks, the charging tasks in the charging task pool are first executed according to the power supply mode.

[0156] In this step, the number of charging tasks and the number of discharging tasks can be directly compared. When the number of charging tasks is relatively small or equal to the number of discharging tasks, the energy storage system will use the determined power supply method to prioritize the discharging tasks; when the number of charging tasks is relatively large, the energy storage system will prioritize the charging tasks.

[0157] The resource scheduling method for the energy storage system provided in this embodiment achieves a dynamic balance between task pools, ensures the coordination of charging and discharging tasks and the high efficiency of system operation, by obtaining the number of charging tasks in the charging task pool and the number of discharging tasks in the discharging task pool; if the number of charging tasks is less than or equal to the number of discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode; if the number of charging tasks is greater than the number of discharging tasks, the charging tasks in the charging task pool are first executed according to the power supply mode.

[0158] Furthermore, Figure 3 This is a flow chart of a resource scheduling method for an energy storage system provided in Embodiment 3 of the present application. Based on Embodiment 1, in the resource scheduling method for an energy storage system provided in this embodiment, the charging and discharging tasks are performed according to the power supply mode, specifically including:

[0159] S301. Obtain the number of charging tasks in a charging task pool, and obtain the number of discharging tasks in a discharging task pool.

[0160] S302: Calculate a first weight factor of the charging task according to the number of charging tasks and a preset exponential function.

[0161] In this step, an exponential function is used to represent the influence of the number of charging tasks on the first weight factor.

[0162] In a specific implementation, the preset exponential function is:

[0163]

[0164] in, represents the first weight factor of the charging task at time t, represents the number of charging tasks in the charging task pool at time t, represents the attenuation coefficient;

[0165] S303: Calculate a second weight factor of the discharge task according to the number of discharge tasks and a preset square root function.

[0166] In this step, a square root function is used to represent the influence of the number of discharge tasks on the second weight factor.

[0167] In a specific implementation, the preset square root function is:

[0168]

[0169] in, represents the second weight factor of the discharge task at time t, Indicates the number of discharge tasks in the discharge task pool.

[0170] S304: Calculate relative priority factors of the charging task and the discharging task based on the first weight factor and the second weight factor.

[0171] In this step, the relative priority factors of the charging task and the discharging task are further calculated based on the calculated first weight factor and the second weight factor.

[0172] In a specific implementation, the relative priority factors of the charging task and the discharging task can be calculated using the following formula:

[0173]

[0174] in, Represents the relative priority factor of the charging task and the discharging task at time t.

[0175] S305: If the relative priority factor is greater than 1, the charging task in the charging task pool is executed first, otherwise the discharging task in the discharging task pool is executed first.

[0176] In this step, if , the energy storage system will give priority to the charging task; if , the energy storage system will use the determined power supply method to prioritize the discharge task; when the number of charging tasks is relatively large.

[0177] It should be understood that in a specific implementation, if the method in step S301-step S305 is used to perform charging and discharging tasks according to the power supply mode, accordingly, the method of steps 1-4 below can be used to determine the power supply mode of the next time period according to the gap requirements at each moment calculated and obtained in the previous time period, the relative priority factors of the charging task and the discharging task, and the second weight factor of the discharging task. The method includes:

[0178] Step 1: Based on the power capacity calculation formula, convert the remaining capacity into the power capacity of the energy storage system.

[0179] In this step, the power capacity calculation formula used is the same as the power capacity calculation formula in the first embodiment, and will not be repeated here.

[0180] Step 2: Calculate the difference between load demand and power capacity to obtain the grid gap demand.

[0181] In this step, the grid gap demand can be calculated in real time based on the load demand obtained in real time and the real-time power capacity converted from the remaining capacity obtained in real time. It can be expressed by the following formula:

[0182]

[0183] in, represents the grid gap demand at time t, represents the load demand of the power grid at time t, Represents the remaining capacity of the energy storage system at time t.

[0184] Step 3: Calculate the dispatch priority based on the grid gap demand and the preset dispatch priority calculation formula of the energy storage system.

[0185] In this step, the scheduling priority calculation formula is:

[0186] in, Indicates the scheduling priority, Indicates the priority adjustment coefficient of load demand, represents the suppression factor of the discharge task on the scheduling priority, , Indicates the starting point of the time interval. Indicates the end point of a time interval.

[0187] It should be understood that when the above steps are used to determine the power supply mode for the next time period at a certain time node, the data required for integration is obtained based on the gap demand at each moment calculated in real time in the previous time period, the relative priority factors of the charging task and the discharging task, and the second weight factor of the discharging task.

[0188] Exemplarily, it is assumed that the power supply mode is determined every hour, and within one hour after the scheduling plan is formulated, the power supply mode is used to perform the charging and discharging tasks, wherein when performing the charging and discharging tasks, it is necessary to judge the priority of the charging and discharging tasks of the energy storage system in real time. For example, at 2 o'clock, according to the method in the above steps 1-5, based on the gap demand at each moment calculated and obtained between 1 and 2 o'clock, the relative priority factor data of the charging and discharging tasks, the power supply mode between 2 o'clock and 3 o'clock is determined, and the power supply mode is used to perform the charging and discharging tasks between 2 o'clock and 3 o'clock, and the priority of the charging and discharging tasks of the energy storage system is judged in real time between 2 o'clock and 3 o'clock.

[0189] Step 4: Determine the power supply mode according to the scheduling priority;

[0190] In a specific implementation, if the scheduling priority is greater than 0 and less than a preset threshold, the power supply mode is determined to be power supply by the energy storage system; if the scheduling priority is greater than the preset threshold, the power supply mode is determined to be power supply by the energy storage system and an external power supply in coordination.

[0191] Among them, the preset threshold can be determined according to actual conditions, and this application does not impose any restrictions on this.

[0192] In a specific implementation, when executing a charging task, the following formula may be used to determine the charging power that can be allocated to the energy storage system:

[0193]

[0194] in, represents the allocable charging power of the energy storage system at time t, represents the remaining capacity of the energy storage system at time t, represents the load demand of the energy storage system at time t, Represents the number of charging tasks in the charging task pool at time t.

[0195] In a specific implementation, when performing a discharge task, the following formula may be used to determine the discharge power that can be allocated by the energy storage system:

[0196]

[0197] in, represents the distributable discharge power of the energy storage system at time t, Indicates the number of discharge tasks in the discharge task pool.

[0198] The resource scheduling method of the energy storage system provided in this embodiment constructs the first weight factor of the charging task and the second weight factor of the discharging task respectively through the exponential function and the square root function, and calculates the relative priority factor of the charging task and the discharging task according to the first weight factor and the second weight factor of the discharging task, and then determines the priority of the task execution according to the size of the priority factor. By comprehensively considering the relative needs of the charging and discharging task pools, a dynamic balance between the task pools is achieved to ensure the coordination of the charging and discharging tasks and the high efficiency of the system operation. At the same time, the scheduling priority factor is calculated by using the gap demand at each moment calculated in real time in the previous time period, the relative priority factor of the charging task and the discharging task, and the second weight factor of the discharging task to obtain the means of power supply mode in the next time period. Through the design of the scheduling priority function, combined with the load demand of the power grid and the current remaining capacity of the energy storage system, the power demand and the energy storage capacity are accurately matched, avoiding the waste and over-utilization of resources.

[0199] Figure 4 A schematic diagram of the structure of a resource scheduling device for an energy storage system provided in Embodiment 4 of the present application, such as Figure 4 As shown, the resource scheduling device 40 of the energy storage system provided in this embodiment includes:

[0200] An acquisition unit 401 is used to acquire the remaining capacity of the energy storage system and the load demand of the current power grid;

[0201] A determination unit 402 is used to determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by an energy storage system, or power supply by an energy storage system in cooperation with an external power supply;

[0202] The execution unit 403 is used to execute the charging and discharging tasks according to the power supply mode.

[0203] The resource scheduling device 40 of the energy storage system provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be described in detail in this embodiment.

[0204] Figure 5 A schematic diagram of the structure of a resource scheduling device for an energy storage system provided in Embodiment 5 of the present application, such as Figure 5 As shown, based on the above embodiment, the resource scheduling device 40 of the energy storage system provided in this embodiment further includes:

[0205] The first allocation unit 404 is used to use

[0206]

[0207] Determine the charging power that can be allocated by the energy storage system;

[0208] in, represents the distributable charging power of the energy storage system at time t, Indicates the maximum discharge power of the energy storage system, represents the remaining capacity of the energy storage system at time t, Represents the load demand of the energy storage system at time t.

[0209] In a possible implementation, the resource scheduling device 40 of the energy storage system further includes:

[0210] The second allocation unit 405 is used to use the

[0211]

[0212] Determine the distributable discharge power of the energy storage system;

[0213] in, It represents the distributable discharge power of the energy storage system at time t.

[0214] In a possible implementation manner, the determining unit 402 is specifically configured to:

[0215] If the load demand is less than or equal to the remaining capacity, determining that the power supply mode is power supply by the energy storage system;

[0216] If the load demand is greater than the remaining capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0217] In a possible implementation manner, the determining unit 402 is specifically configured to:

[0218] Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system;

[0219] If the load demand is greater than the power capacity, determining that the power supply mode is power supply by the energy storage system;

[0220] If the load demand is less than or equal to the power capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0221] In a possible implementation manner, the determining unit 402 includes:

[0222] A conversion module, based on a power capacity calculation formula, converts the remaining capacity into a power capacity of the energy storage system;

[0223] A first calculation module is used to calculate the difference between the load demand and the power capacity to obtain a grid gap demand;

[0224] A second calculation module is used to calculate the dispatch priority according to the grid gap demand and a preset dispatch priority calculation formula of the energy storage system;

[0225] A determination module, used to determine the power supply mode according to the scheduling priority;

[0226] The scheduling priority calculation formula is:

[0227] in, Indicates the scheduling priority, represents the grid gap demand at time t, Indicates the priority adjustment coefficient of load demand, represents the suppression factor of the discharge task on the scheduling priority, represents the second weight factor of the discharge task at time t, Represents the relative priority factor of the charging task and the discharging task at time t, , Indicates the starting point of the time interval. Indicates the end point of a time interval.

[0228] In a possible implementation manner, the determining module is specifically configured to:

[0229] If the scheduling priority is greater than 0 and less than a preset threshold, determining that the power supply mode is power supply by the energy storage system;

[0230] If the scheduling priority is greater than the preset threshold, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

[0231] In a possible implementation manner, the fifth calculation module is specifically configured to:

[0232] Based on the first weight factor and the second weight factor, using

[0233]

[0234] Calculate the relative priority factors of the charging task and the discharging task;

[0235] in, Represents the first weight factor of the charging task at time t.

[0236] In a possible implementation manner, the preset exponential function in the third calculation module is:

[0237]

[0238] in, represents the number of charging tasks in the charging task pool at time t, represents the attenuation coefficient;

[0239] The preset square root function in the fourth calculation module is:

[0240]

[0241] in, Indicates the number of discharge tasks in the discharge task pool.

[0242] In a possible implementation, the execution unit 403 is specifically configured to:

[0243] Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool;

[0244] If the number of the charging tasks is less than or equal to the number of the discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode;

[0245] If the number of the charging tasks is greater than the number of the discharging tasks, the charging tasks in the charging task pool are executed first according to the power supply mode.

[0246] In a possible implementation, the execution unit 403 includes:

[0247] An acquisition module, used to acquire the number of charging tasks in the charging task pool and the number of discharging tasks in the discharging task pool;

[0248] A third calculation module, configured to calculate a first weight factor of the charging task according to the number of charging tasks and a preset exponential function;

[0249] A fourth calculation module, used for calculating a second weight factor of the discharge task according to the number of the discharge tasks and a preset square root function;

[0250] a fifth calculation module, configured to calculate a relative priority factor of a charging task and a discharging task based on the first weight factor and the second weight factor;

[0251] The execution module is used to execute the charging task in the charging task pool first if the relative priority factor is greater than 1, and otherwise execute the discharging task in the discharging task pool first.

[0252] The resource scheduling device 40 of the energy storage system provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be described in detail in this embodiment.

[0253] Figure 6 This is a schematic diagram of the structure of the computer device provided in this application. Figure 6 As shown, the computer device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0254] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0255] The specific implementation process of the processor 501 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0256] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0257] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0258] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A resource scheduling method for an energy storage system, characterized in that: include: Obtain the remaining capacity of the energy storage system and the current load demand of the power grid; Determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by an energy storage system, or power supply by an energy storage system in conjunction with an external power source; The charging and discharging tasks are performed according to the power supply mode.

2. The method according to claim 1, characterized in that The determining of the power supply mode according to the remaining capacity and the load demand includes: If the load demand is less than or equal to the remaining capacity, determining that the power supply mode is power supply by the energy storage system; If the load demand is greater than the remaining capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

3. The method according to claim 1, characterized in that The determining of the power supply mode according to the remaining capacity and the load demand includes: Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system; If the load demand is greater than the power capacity, determining that the power supply mode is power supply by the energy storage system; If the load demand is less than or equal to the power capacity, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

4. The method according to claim 1, characterized in that: The determining of the power supply mode according to the remaining capacity and the load demand includes: Based on a power capacity calculation formula, converting the remaining capacity into a power capacity of the energy storage system; Calculating the difference between the load demand and the power capacity to obtain a grid gap demand; Calculate the dispatch priority according to the grid gap demand and the preset dispatch priority calculation formula of the energy storage system; Determining the power supply mode according to the scheduling priority; The scheduling priority calculation formula is: in, Indicates the scheduling priority, represents the grid gap demand at time t, Indicates the priority adjustment coefficient of load demand, represents the suppression factor of the discharge task on the scheduling priority, represents the second weight factor of the discharge task at time t, Represents the relative priority factor of the charging task and the discharging task at time t, , Indicates the starting point of the time interval. Indicates the end point of a time interval.

5. The method according to claim 4, characterized in that The determining the power supply mode according to the scheduling priority includes: If the scheduling priority is greater than 0 and less than a preset threshold, determining that the power supply mode is power supply by the energy storage system; If the scheduling priority is greater than the preset threshold, it is determined that the power supply mode is the coordinated power supply of the energy storage system and the external power supply.

6. The method according to any one of claims 1 to 5, characterized in that: The performing of the charging and discharging tasks according to the power supply mode includes: Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool; If the number of the charging tasks is less than or equal to the number of the discharging tasks, the discharging tasks in the discharging task pool are first executed according to the power supply mode; If the number of the charging tasks is greater than the number of the discharging tasks, the charging tasks in the charging task pool are executed first according to the power supply mode.

7. The method according to any one of claims 1 to 5, characterized in that: The performing of the charging and discharging tasks according to the power supply mode includes: Get the number of charging tasks in the charging task pool, and get the number of discharging tasks in the discharging task pool; Calculating a first weight factor of the charging task according to the number of charging tasks and a preset exponential function; Calculating a second weight factor of the discharge task according to the number of discharge tasks and a preset square root function; Based on the first weight factor and the second weight factor, a relative priority factor of the charging task and the discharging task is calculated; If the relative priority factor is greater than 1, the charging task in the charging task pool is executed first, otherwise the discharging task in the discharging task pool is executed first.

8. The method according to claim 7, characterized in that The calculating, based on the first weight factor and the second weight factor, a relative priority factor of the charging task and the discharging task comprises: Based on the first weight factor and the second weight factor, using Calculate the relative priority factors of the charging task and the discharging task; in, Represents the first weight factor of the charging task at time t.

9. The method according to claim 7, characterized in that: The preset exponential function is: in, represents the number of charging tasks in the charging task pool at time t, represents the attenuation coefficient; The preset square root function is: in, Indicates the number of discharge tasks in the discharge task pool.

10. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: When performing charging tasks, use Determine the charging power that can be allocated by the energy storage system; in, represents the distributable charging power of the energy storage system at time t, Indicates the maximum discharge power of the energy storage system, represents the remaining capacity of the energy storage system at time t, Represents the load demand of the energy storage system at time t.

11. The method according to claim 10, characterized in that The method further comprises: When performing the discharge task, the Determine the distributable discharge power of the energy storage system; in, It represents the distributable discharge power of the energy storage system at time t.

12. A resource scheduling device for an energy storage system, characterized in that: include: An acquisition unit, used to obtain the remaining capacity of the energy storage system and the current load demand of the power grid; a determining unit, configured to determine a power supply mode according to the remaining capacity and the load demand, wherein the power supply mode includes power supply by an energy storage system, or power supply by an energy storage system in cooperation with an external power supply; An execution unit is used to execute charging and discharging tasks according to the power supply mode.

13. A computer device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 10.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 10 when executed by a processor.

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